Birdie Beach water temperatures peak in the range 22 to 25°C (72 to 77°F) on around the 5th of February and are at their lowest on about the 21st of August, in the range 17 to 20°C (63 to 68°F). Birdie Beach water temperatures are always warm reach their highest at the beginning of February. You'll need a 2mm neoprene top or a shorty at dawn/dusk or if it's windy. The lowest Birdie Beach water temperatures in mid to late August require something like a 3/2mm fully sealed wetsuit.